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(No Model.) 2 Sheets-Sheet 1.

P. A. JONES.

RECORDING PRESSURE GAGE. No. 287.685. Patented Oct. 30, 1883.

WITNEEEIEE! INVENTUR W 3y 771:5

2 Sheets-Sheet 2.

(No Model.)

I. A. JONES.

RECORDING PRESSURE GAGE.

Patented 0m. 30-, 1883.

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- INVENTBR M Q Figure 1 is a PATENT OFFICE.

FLORENTINE A. JONES, OF NEWV YORK, N. Y.

RECORDING PRESSURE-GAGE.

SPECIFICATION forming part of Letters Patent No. 287,685,

dated October 30, 1883.

Application filed June 11, 1883. (No model.)

To all whom it may concern.-

Be it known that I, FLORENTINE A. J onus, of the city, county, and Stateof New York, have invented new and useful Improvements in RecordingPressure-Gages, of which the following is a specification.

This invention relates to gages for showing the extent and variations ofpressure in steam; boilers, cylinders, or other vessels containing air,gas, liquid, or other fluids, and is an improvement on the invention forwhich I and one Sylvester Glines made application for Letters Patent,said application having been filed May 19, 1883.

In the accompanying drawings, in which similar letters of referenceindicate like parts, plan view of my improved re cording pressuregagewith the dial oithe gagebOX removed. Fig. 2 is a detailed section of thepointer. Fig. 3 is a plan view of the case complete. Fig. 4 is a frontelevation of the same. Fig. 5 is a section on line w 00, Fig. 3.

A and A are boxes secured to each other by the connection B, which has apassage, 13, for the accommodation of the connecting mechanism.

0 represents a Bourdon spring, and E the ordinary mechanism of asteam-gage, consisting, essentially, of a segmental rack, D, pivotednear its rear end and meshing into apinion carrying the pointer.drawings.

F is a link connecting the spring 0 with the mechanism E, which givesmovement to the pointer, showing, in connection with a dial,thesteam-pressure.

G is a dial rotated by a clock-movement, and having upon its surfacetwelve radial curved lines, corresponding with the number of hours in ahalf-day, and a certain number of concentric circles, 9, correspondingwith the pressure indicated upon the dial of the steam-gage.

H is a lever, crooked for convenience, and pivoted at h to the standardI, so as to freely swing back and forth, and provided at its free endwith the pencil J.

(Not shown in the K is the connecting-rod, extending from the lever H tothe segmental rack D directly, 1n

stead of to the part shown in the invention above alluded to, and L is aslat in said lever, by means of which the point of attachment of theconnecting-rod may be changed at will.

In operation, as steam or other fluid enters the hollow spring O throughthe hollow plug P, the pressure acting 011 the inner surface of thespring causes it to expand or contract as the pressure is greater orless, and this movement is communicated by means of the rod K to thelever H, thus causing the pencil J to vibrate with the movement of thespring and with the pointer on the dial of the steam-gage, and give adelineation of the pressure and the time of any change therein on thedial G,which is arranged to rotate once in twelve hours.

It will be seen by referring to Figs. 3, l, and 5 of the drawings, thatthe gage-box A is provided with a fast cover, a, rigidly secured andkept closed by the screw d, or other suita means, while the box A has ahinged cover, a, hinged'in this instance at the back I), and adapted tobe locked by the padlock e. The box A is not often to be opened, whilethe box A should be easily accessible in its interior.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

In a recording pressure-gage, the combina tion of the following parts,viz: a suitablysecured Bourdon spring, the segmental rack D, pivoted, asshown, the lever II, pivoted to the standard I, and provided with anindicating or delineating device, a suitable surface for the recordingof the pressure, the connecting-rod K, pivoted to the lever II and thefront end of the rack D, and the connecting rod or link F, all arrangedand constructed substantially as and for the purpose set forth.

FLORENTINE A. J ONES.

Vitnesses:

HENRY W. WILLIAMs, J osErH Isnnnnon.

